Marktest is leading in Top 10K Sites and Top 100K Sites.
WebProspector has better usage coverage in more websites categories. Including Business & Industry, Marketing & Advertising, Internet & Telecom, Finance and 31 other categories.
Marktest is leading in Newspapers and TV & Video.
WebProspector is leading in most countries, including Germany, United States, Austria, Russia and 9 other countries.
Marktest is leading in Brazil.